Expansion mechanism for minimally invasive lumbar operation

Details Expansion mechanism for minimally invasive lumbar operation Expansion mechanism for minimally invasive lumbar operation

2007-03-02

2010-10-12

Barrett, Thomas C (Department: 3775)

Surgery

Specula

Retractor

C600S210000, C600S235000

Reexamination Certificate

active

07811230

ABSTRACT:
An expansion mechanism for minimally invasive lumbar operation has a support member, a plurality of sliders movably assembled on the support member, at least a couple of outside muscle hook members mounted on adjacent sliders, an inside muscle hook member assembled on the slider, and a nerve hook member assembled on the slider. The expansion mechanism for minimally invasive operation makes small incisions and hurts less tissues. Furthermore, the expansion mechanism protects nerve tissues from repeated stirring. Muscles can be drawn apart without the need of removing ligament, obtaining clear and large operation vision.

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patent: 3749088 (1973-07-01), Kohlmann
patent: 4421107 (1983-12-01), Estes et al.
patent: 4421108 (1983-12-01), Cabrera et al.
patent: 5755660 (1998-05-01), Tyagi
patent: 7435219 (2008-10-01), Kim
patent: 2006/0224044 (2006-10-01), Marchek et al.

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